Interviewer effects in food acquisition surveys.

Public Health Nutrition
Ai Rene OngJohn A Kirlin

Abstract

To understand the effects of interviewers on the responses they collect for measures of food security, income and selected survey quality measures (i.e. discrepancy between reported Supplemental Nutrition Assistance Program (SNAP) status and administrative data, length of time between initial and final interview, and missing income data) in the US Department of Agriculture's National Household Food Acquisition and Purchase Survey (FoodAPS). Using data from FoodAPS, multilevel models with random interviewer effects were fitted to estimate the variance in each outcome measure arising from effects of the interviewers. Covariates describing each household's socio-economic status, demographics and experience in taking the survey, and interviewer-level experience were included as fixed effects. The variance components in the outcomes due to interviewers were estimated. Outlier interviewers were profiled. Non-institutionalized households in the continental USA (April 2012-January 2013). Individuals (n 14 317) in 4826 households who responded to FoodAPS. There was a substantial amount of variability in the distributions of the outcomes examined (i.e. time between initial and final interview, reported values for food security, individua...Continue Reading

References

Sep 25, 2002·Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association·G TurrellT Gould
Feb 18, 2011·BMC Medical Research Methodology·Freedom N Gumedze, Dan Jackson
Apr 14, 2011·Public Health Nutrition·Dirce M MarchioniCarlos A Monteiro
Oct 31, 2014·Ecology of Food and Nutrition·Mary K Griffin, Jeffery Sobal

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